﻿using System;
using System.Collections.Generic;
using System.Linq;

using System.Web.UI.WebControls;

using Microsoft.AspNet.Membership.OpenAuth;

namespace MyNet.WebUI.Account {
    public partial class Manage : System.Web.UI.Page {
        protected string SuccessMessage {
            get;
            private set;
        }

        protected bool CanRemoveExternalLogins {
            get;
            private set;
        }

        protected void Page_Load () {
            if ( !IsPostBack ) {
                // Determine the sections to render
                var hasLocalPassword = OpenAuth.HasLocalPassword ( User.Identity.Name );
                setPassword.Visible = !hasLocalPassword;
                changePassword.Visible = hasLocalPassword;

                CanRemoveExternalLogins = hasLocalPassword;

                // Render success message
                var message = Request.QueryString["m"];
                if ( message != null ) {
                    // Strip the query string from action
                    Form.Action = ResolveUrl ( "~/Account/Manage.aspx" );

                    SuccessMessage =
                        message == "ChangePwdSuccess" ? "Your password has been changed."
                        : message == "SetPwdSuccess" ? "Your password has been set."
                        : message == "RemoveLoginSuccess" ? "The external login was removed."
                        : String.Empty;
                    successMessage.Visible = !String.IsNullOrEmpty ( SuccessMessage );
                }
            }


            // Data-bind the list of external accounts
            var accounts = OpenAuth.GetAccountsForUser ( User.Identity.Name );
            CanRemoveExternalLogins = CanRemoveExternalLogins || accounts.Count () > 1;
            externalLoginsList.DataSource = accounts;
            externalLoginsList.DataBind ();

        }

        protected void setPassword_Click ( object sender, EventArgs e ) {
            if ( IsValid ) {
                var result = OpenAuth.AddLocalPassword ( User.Identity.Name, password.Text );
                if ( result.IsSuccessful ) {
                    Response.Redirect ( "~/Account/Manage.aspx?m=SetPwdSuccess" );
                } else {

                    newPasswordMessage.Text = result.ErrorMessage;

                }
            }
        }


        protected void externalLoginsList_ItemDeleting ( object sender, ListViewDeleteEventArgs e ) {
            var providerName = (string) e.Keys["ProviderName"];
            var providerUserId = (string) e.Keys["ProviderUserId"];
            var m = OpenAuth.DeleteAccount ( User.Identity.Name, providerName, providerUserId )
                ? "?m=RemoveLoginSuccess"
                : String.Empty;
            Response.Redirect ( "~/Account/Manage.aspx" + m );
        }

        protected T Item<T> () where T : class {
            return GetDataItem () as T ?? default ( T );
        }


        protected static string ConvertToDisplayDateTime ( DateTime? utcDateTime ) {
            // You can change this method to convert the UTC date time into the desired display
            // offset and format. Here we're converting it to the server timezone and formatting
            // as a short date and a long time string, using the current thread culture.
            return utcDateTime.HasValue ? utcDateTime.Value.ToLocalTime ().ToString ( "G" ) : "[never]";
        }
    }
}